42114101 Rev.1
24 /
(2)
Encoder Disk
In the operation of the spacing motor, the PHASE-A and PHASE-B signals are generated
when the encoder disk interrupts the photo sensor.
The LSI divides these edge pulse signals in accordance with the print pitch, and sends
the IPT signal to provide dot-on timing and carriage position detection timing.
• UTILITY MODE
1/720"
1/120"
SPU
SPV
SPW
PHASE-A
PHASE-B
IPT 10 CPI
12 CPI
15 CPI
IPT 17 CPI
20 CPI
1/240"
(3)
LF Motor Control
The LF motor driver (MHM2025) drives the LF motor in two-phase or 1-2 phase bipolar,
based on the phase changeover data and the output current data from the MPU.
The data from the MPU is processed by a specific register contained in the LF motor driver
to measure the overdrive time and to change the phase.
[FORWARD]
PHASE-B
[REVERSE]
PHASE-A
Содержание ML490 Series
Страница 1: ...42114101 Rev 1 1 135 ML490 491 PRINTER Maintenance Manual ODA...
Страница 2: ...42114101 Rev 1 2...
Страница 38: ...42114101 Rev 1 38 Drive gear Ink tank Ribbon cartridge Figure 2 6...
Страница 48: ...42114101 Rev 1 48 Change arm Change lever Platen Release cam Figure 2 13 REAR TOP BOTTOM...
Страница 96: ...42114101 Rev 1 96 9 Carriage Assy NK2 10 SUS Bearing portion of guide roller EM 30L B...
Страница 119: ...42114101 Rev 1 119 6 8 9 7 1 2 3 11 10 4 5 Figure B 2 Printer General Assy...
Страница 124: ...42114101 Rev 1 124 9 12 11 1 13 3 7 1 14 5 6 7 2 10 8 Figure B 4 Carriage Assy...
Страница 126: ...42114101 Rev 1 126 Figure B 5 Option Spare Parts Pull Tractor Bottom Tractor I F Board 3 2 1 4 5 6 7...
